Each week there are multiple incidents involving vehicles crashing into homes in Perth.

Eight-month-old Nate Dunbar was killed early on Friday morning when a Hilux slammed into a Merriwa home.

Inspector Dominic Wood said police attended far too many of these crashes.

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"So many times we've been saying 'thankfully no one was injured and this is a tragic event,' I guess the number of vehicles that crash into homes that we seem to go to, it was only a matter of time before something tragic happened," he said.

A 35-year-old woman was charged with dangerous driving occasioning death after the dual cab Toyota Hilux she was allegedly driving crashed into the Merriwa house where the baby was in his cot.

The woman driving the Hilux lost control of the vehicle on Hester Avenue about 2.30am, crossing several lanes of traffic, mounting a kerb, crashing through a fence and then colliding with the rear wall of a house in Tug Cove.

The Quinns Rock woman was taken to hospital as a precaution after the crash and later charged.

The family of the baby boy spoke about the tragedy.

The grandfather of eight-month-old Nate Troy Dunbar made a statement on behalf of the family.

"In this hard and distressing time we are grieving the loss of Nate Troy Dunbar who was tragically taken this morning [Friday]," he said.

"If everyone could please respect our privacy at this difficult time, we would appreciate it."

Inspector Wood said he had spoken to the family who were "absolutely devastated and still in shock".

He said it was an absolute tragedy for the family, which consists of a mother, father and an older sibling.

The two-tonne vehicle involved in the incident is understood to have had a bull bar on it.

A preliminary breath test of the driver, a woman in her 30s, came back positive and Inspector Wood said this meant she may have had a blood alcohol limit of more than 0.05.

Anyone who saw the vehicle prior to the crash or who has any information regarding this incident is asked to call Crime Stoppers on 1800 333 000.